Home / 3,130.30-4,695.45-3,081.70

Finding the Fourth Proportional to 3,130.30, 4,695.45 and 3,081.70

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Solution

The fourth proportional to 3,130.30, 4,695.45 and 3,081.70 is: 4,622.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.30 : 4,695.45 = 3,081.70 : x
  2. Step 2: Convert to fraction form
    3,130.30/4,695.45 = 3,081.70/x
  3. Step 3: Cross multiply
    3,130.30x = 4,695.45 × 3,081.70
  4. Step 4: Simplify right side
    3,130.30x = 14,469,968.27
  5. Step 5: Solve for x
    x = 14,469,968.27/3,130.30
  6. Step 6: Final answer
    x = 4,622.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.